Concrete placement apparatus



Nov. 4, 1941.

C. JACKSON CONCRETE PLACEMENT APPARATUS Filed Jan. 6, 1940 2Sheets-Sheet-l INVENTOR. ww/W @fdc/fwn ATTORNEYS Nov. 4, 1941.

c. JACKSON CONCRETE PLACEMENT APPARATUS Filed Jan. 6, 1940 2Sheets-Sheet 2 S n Mw m E O V n mw A MM W W9 0C w Patented Nov. 4, 1941UNITED STATES PATENT y OFFICE CMLUS Application January 6, 1940, SerialNo. 312,739

9 Claims.

This invention relates to improvements'in con' crete placementapparatus.

The main objects of this invention are:

First, to provide a machine or apparatus for the placement of concretesuch as pavements, concrete slabs, the walls of ditches, conduits, orthe like.

Second, to provide a machine or apparatus which is capable of a widerange of adjustment to meet particular conditions such as engineeringspecifications, formula of material placed, and the like. y

Objects relating to details and economies of the invention will appearfrom the description to follow. The invention is dened in the claims.-

Preferred embodiments of the invention are illustrated in theaccompanying drawings, in which:

Fig. .1 is a vertical longitudinal section of a machine or apparatusembodying the features of my invention on line I-I of Fig. 2, certain ofthe parts being conventionalized for convenience in illustration.

Fig. 2 is a fragmentary front elevation.

Fig. 3 is a fragmentary plan view.

Fig. 4 is a fragmentary section showing a modified form or embodimentparticularly in the mounting of the vibrating rotor.

In the embodiment of my invention illustrated in the accompanyingdrawings, the reference numeral I indicates the main carriage of apaving machine provided with carrying wheels 2 adapted to travel on thelongitudinal form members 3. The paving machine I is provided with areciprocating screed designated generally by the numeral 4 and comprisesa shoe 5 and a face plate 6, the face plate being adapted to support asubstantial amount of material to be treated.

The screed is reciprocated by suitable means including the crank 1 andpitmans 8. The screed is advanced with the carriage, thrust sustainingrollers 9 being provided. The screed is provided with forwardly andoutwardly converging wings ID which overhang the side forms 3.

I provide an auxiliary vibratory element carrying frame which in thisembodiment comprises the end or side members II which are adjustablysecured by means of clamps I2 and I3 tothe push bars I4 which arepivotally mounted on the main carriage at I5. The end members II areconnected by the tubular transverse frame member I6. This auxiliarycarriage is provided with wheels Il which are carried by wheelsupporting brackets I8 pivoted at I9 on the frame side members II andoperatively connected to a hydraulic motor designated generally by thenumeralV 20 by means of the link 2l. I have illustrated only one end ofthis carrying frame. It will be understood that the other is 'asubstantial duplicate thereof, the hydraulic motor 28 being connected toa link corresponding to the link 2| at the other side of the machine bymeans of the rockshaft 22 which is arranged within the tubular framemember IG. 'I'his rockshaft is connected to the motor 20 by means of thearm 23, a corresponding arm at the other end of the rockshaft being 1connected to a link corresponding to the link 2 I.

An adjustable stop 24 is provided to limit the clockwise swing of thewheel carriers I8 about pivot I9 and thus determine thelowered positionof the vibratory member. This stop, however, is capable of a wide rangeof adjustment.`

Bolted to the top of bar I4 is an automatic cutoil switch IGI actuablethrough a tappet |62 engaged by an abutment on rock shaft 22 when theshoe is elevated by the fluid matter to inoperative position, whereby toprevent destructive or undue shaking thereof by the vibrator when theshoe is out of engagement with the work.

The vibratory member designated generally by the numeral 25 comprises ahorizontal shoe 26 of substantial width. This shoe is provided with aface plate 21 of such height as to rearwardly sustain for advancement asubstantial amount of material to be treated as is illustrated in Fig.1.

A plurality of spaced vertical plate-like vibratory members 28 aresecured to the face plate to project substantially forward therefrom andthese have narrowed portions 29 extending transversely below the shoe.These plates 28 are arranged in spaced parallel relation and constituteauxiliary vibratory members and provide a plurality of pockets 30 at thefront of the face plate adapted to receive and advance material beingtreated, the members 28 coacting with theface plate to effectivelyvibrate this material and to transmit vibrationsbeyond the confines ofthe pockets a substantial distance into the material. These plates haveenlargements 32 of rounded section on their outer edges, theseenlargements serving the purpose of reinforcing the plates and alsopresenting an enlarged surfa'ce to receive wear and to transmitvibrations. f

The vibratoryelement is provided with a top plate 33 which serves as aneifectivehousing for the vibrating unit 34 which in this case-is anelectric motor, the rotor 35 of which is provided with an unbalancingweight 36. y

In the embodiment of Fig. l, the axis of the rotor is disposedlongitudinally of the vibratory element, the motor being mounted onsuitable brackets 37 rigidly secured to the shoe and face plate of thevibratory element.

In the embodiment shown in Fig. 4, the axis of the rotor is disposedtransversely of the vibratory element. The vibratory element in bothembodiments is supported from the auxiliary frame by the flexiblenon-extensible hangers 38 which permit free vibratory movement thereofand is also provided with a flexible non-extensible draft member 39. Bythus mounting the vibratoryelement it may be vertically adjustedrelative to the material and relative to the screed 4 and also adjustedto and from the screed, this latter adjustment being effected byadjusting the clamps l2 and I3 on the push bars Il.` It is preferred,however, that the heel of the vibratory member 4be spaced from thescreed so that the material treated by the vibratory element may flowupwardly in front of the screed as indicated at lll.

I have illustrated and described my machine or apparatus for theplacement of concrete in a very practical embodiment thereof. I have notattempted to illustrate or describe other embodiments or adaptations asit is believed that this disclosure will enable those skilled in the artto embody or adapt the same as may be desired.

Having thus described my invention, what I claim as new and desire tosecure by Letters Patent, is:

1. In a machine of the class described, the combination with amaincarriage, of a reciprocating screed advanced with said main carriage, avibratory element comprising an elongated flat shoe of substantial widthdisposed in advance of and in parallel relation to said screed andhaving a face plate adapted to rearwardly sustain and advance asubstantial amount of material to be treated, a plurality of spacedparallel vertically disposed transverse plates projecting forwardly fromsaid shoe face plate substantial distances and providing auxiliaryvibratory members and a plurality of material receiving pocketstherebetween at the front of the face plate, said plates being extendedtransversely below said shoe, a vibrating means for said vibratoryelement comprising an unbalanced rotor mounted thereon. and verticallyand horizontally adjustable means for supporting said vibratory elementfor vertical and horizontal adjustment relative to the material beingtreated and to said screed.

2. In a machine of the class described, the combination with a maincarriage, of a reciprocating screed advanced with said main carriage, avibratory element comprising an elongated flat shoe of substantial widthdisposed in advance of and in parallel relation to said screed andhaving a face plate adapted to rearwardly sustain and advance asubstantial amount of material to be treated, a plurality of spacedparallel vertically disposed transverse plates projecting forwardly fromsaid shoe face plate substantial distances and providing auxiliaryvibratory members and a plurality of material receiving pocketstherebetween at the front of the face plate, a vibrating means for saidvibratory element, and vertically and horizontally adjustable means forsupporting said vibratory element for vertical and horizontal adjustmentrelative to the material being treated and to said screed, saidsupporting means including a frame connected to the carriage and aflexible hanger supporting said element in depending relation to saidcarriage.

3. In a machine of the class described, the

memes combination with a main carriage, of a reciprocating screedadvanced with said main carriage, a vibratory element comprising anelongated iiat shoe of substantial width disposed in advance of and inparallel relation to said screed and having a face plate/adapted torearwardly sustain and advance a substantial amount of material to betreated, a vibrating means for said vibratory element, and verticallyand horizontally adjustable means for supporting said vibratory elementfor vertical and horizontal adjustment relative to the material beingtreated and to said screed, said supporting means including a frameconnected to the carriage and a flexible hanger connected to the frameand supporting said element in depending relation thereto.

4. In a machine of the class described, the combination with a maincarriage, of a screed advanced with said main carriage, a vibratoryelement comprising an elongated fiat shoe of substantial width disposedin advance of and in parallel relation to said screed and having a faceplate adapted to rearwardly sustain and advance a substantial amount ofmaterial to be treated, a plurality of spaced parallel verticallydisposed transverse plates projecting forwardly from said shoe faceplate substantial distances and providing auxiliary vibratory membersand a plurality of material receiving pockets therebetween at the' frontof the shoe and face plate,'means for vibrating said vibratory elementat high frequency, and means including flexible hanger means for theelement for supporting said vibratory element for vertical adjustmentrelative to the material being treated, said supporting means beingadjustable relative to said screed and carriage to position saidelement.

5. In a machine of the class described, the combination of a vibratoryelement comprising an elongated flat shoe of substantial width andhaving a face plate adapted to rearwardly sustain and advance asubstantial amount of material to be treated, a plurality of spacedparallel vertically disposed transverse plates projecting 45, forwardlyfrom said face plate substantial distances and providing auxiliaryvibratory members and a plurality of material receiving pocketstherebetween at the front of the shoe and face plate, said verticallydisposed plates being extended transversely below said shoe and beingprovided with enlargements of rounded section at the outer edgesthereof, a vibratory means for said vibratory element comprising anunbalanced rotor mounted thereon, and vertically adjustable,translatable means for supporting said vibratory element for verticaladjustment relative to the material treated and for advancement in itsadjusted positions.

6. In a machine of the class described, the combination of a vibratoryelement comprising an elongated ilat shoe of substantial width andhaving a face plate adapted to rearwardly sustain and advance asubstantial amount of material to be treated, a plurality of spacedparallel vertically disposed transverse plates projecting forwardly fromsaid face plate substantial distances and providing auxiliary vibratorymembers and a plurality of material receiving pockets therebetween atthe front of the shoe and face plate, said vertically disposed platesbeing extended transversely below said shoe, a vibratory means for saidvibratory element comprising an unbalanced rotor mounted thereon, andilexible means for supporting said vibratory element relative to thematerial treated.

7. In a machine of the class described, the combination of a vibratoryelement comprising an elongated dat bottom shoe of substantial width andhaving a face plate adapted to rearwardly sustain and advance asubstantial amount of material to be treated, a plurality of spacedparallel vertically disposed transverse plates projecting forwardly fromsaid face plate substantial distances and providing auxiliary vibratorymembers and a plurality of material receiving pockets therebetween atthe front of the shoe and face tances and providing auxiliary vibratorymembers and a plurality of material receiving pockets therebetween, saidvertically disposed plates being extended transversely below said shoeand being provided with enlargements of rounded section at theouteredges thereof, and means for vibrating said vibratory element at highfrequency.

9. In a machine of'the class described, the combination of a vibratoryelement comprising an elongated iat shoe of substantial width and havinga face plate adapted to rearwardly sustain and advance a substantialamount of material to be treated, a plurality of spaced parallelvertically disposed transverse plates projecting forwardly from saidface plate substantial distances and providing auxiliary vibratorymembers and a plurality of material receiving pockets therebetween, saidvertically disposed plates being extended transversely below said shoe,and means for vibrating said vibratory element at high frequency.

l CORWIIL JACKSON.

